I know this kind of question might not be appropriate in Hardware & DIY section, but I really want to know what one uses for a planted tank as a heater. If you look at High-tech tanks, you never see a heater!! Where is it hidden?? Or is it there at all? I'm by no means an expect in this area as of yet, but this is one of the questions I'm facing in my High-tech tank! By the way UKAPS.org absolutely rocks!! Love your help and friendliness guys!! Cheers!